Pregnant one night stand 😓

Ok so I met this guy one night and we ended up having sex unprotected sex he didn't have any condoms left so we both agreed for him to pull out..i know I know but I'm pregnant and it by him at this point I'm just don't know what to do I been so stressed out I'm high risk for a miscarriage I don't even have the guy number to contact him but I have his address should I tell him or just raise the baby on my own.he already have a daughter and  I know I can do it on my own but a child needs its father any advice ****plz leave the negative comments I can do with out those